A new study has found that shale drilling and fracking contaminated drinking water wells in Pennsylvania. The study represents the first peer-reviewed paper confirming that fracking can and does contaminate drinking water supplies.

At today's Faith & Freedom Coalition event, "The Road to Majority," Greenpeace asked presidential candidates about their reactions to Pope Francis' call for solutions to climate change, as justified by science, faith and morality in his freshly-released encyclical on ecology, climate change and poverty.